﻿// Copyright 2008 Chris Varley (http://www.contractdriven.net/)
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

using ContractDriven.CommonAssertions;
using NUnit.Framework;
using Assert = NUnit.Framework.Assert;

namespace ContractDrivenTests.CommonAssertions
{
    [TestFixture, Description("Tests for NotNullAssertion Class")]
    public class NotNullAssertionTest
    {

        [Test]
        public void NotNullAssertionConstructorTest()
        {
            var notNullAssertion = new NotNullAssertion("test");
			Assert.IsNotNull(notNullAssertion);
		}

        #region Eval Method Tests

        [Test]
        public void EvalTest()
        {
            var notNullAssertion = new NotNullAssertion("a test string");
            var result = notNullAssertion.Eval();

            const bool expected = true;
            Assert.AreEqual(expected, result, "NotNullAssertionAssertion.Eval failed. String was incorrectly evaluated as null.");
        }

        [Test]
        public void EvalNullTest()
        {
            var notNullAssertion = new NotNullAssertion(null);
            var result = notNullAssertion.Eval();

            const bool expected = false;
            Assert.AreEqual(expected, result, "NotNullAssertion.Eval failed. Null value was incorrectly evaluated as not null.");
        }

        #endregion

    }
}
